path: root/Documentation/kbuild
diff options
authorLinus Torvalds <>2021-04-29 14:32:00 -0700
committerLinus Torvalds <>2021-04-29 14:32:00 -0700
commit8ca5297e7e38f2dc8c753d33a5092e7be181fff0 (patch)
tree842d941b0e80a6aa7f0f749817c05e4c752e8cd1 /Documentation/kbuild
parentb0030af53a74a08c77ea11d3888da21542af2d0e (diff)
parent8ac27f2c6eac1f140531411e404fb3ba23339ba5 (diff)
Merge tag 'kconfig-v5.13' of git://
Pull Kconfig updates from Masahiro Yamada: - Change 'option defconfig' to the environment variable KCONFIG_DEFCONFIG_LIST - Refactor tinyconfig without using allnoconfig_y - Remove 'option allnoconfig_y' syntax - Change 'option modules' to 'modules' - Do not use /boot/config-* etc. as base config for cross-compilation - Fix a search bug in nconf - Various code cleanups * tag 'kconfig-v5.13' of git:// (34 commits) kconfig: refactor .gitignore kconfig: highlight xconfig 'comment' lines with '***' kconfig: highlight gconfig 'comment' lines with '***' kconfig: gconf: remove unused code kconfig: remove unused PACKAGE definition kconfig: nconf: stop endless search loops kconfig: split menu.c out of parser.y kconfig: nconf: refactor in print_in_middle() kconfig: nconf: remove meaningless wattrset() call from show_menu() kconfig: nconf: change set_config_filename() to void function kconfig: nconf: refactor attributes setup code kconfig: nconf: remove unneeded default for menu prompt kconfig: nconf: get rid of (void) casts from wattrset() calls kconfig: nconf: fix NORMAL attributes kconfig: mconf,nconf: remove unneeded '\0' termination after snprintf() kconfig: use /boot/config-* etc. as DEFCONFIG_LIST only for native build kconfig: change sym_change_count to a boolean flag kconfig: nconf: fix core dump when searching in empty menu kconfig: lxdialog: A spello fix and a punctuation added kconfig: Couple of typo fixes ...
Diffstat (limited to 'Documentation/kbuild')
2 files changed, 12 insertions, 19 deletions
diff --git a/Documentation/kbuild/kconfig-language.rst b/Documentation/kbuild/kconfig-language.rst
index 226ae072da7d..98c24183d8c3 100644
--- a/Documentation/kbuild/kconfig-language.rst
+++ b/Documentation/kbuild/kconfig-language.rst
@@ -223,25 +223,10 @@ applicable everywhere (see syntax).
the indentation level, this means it ends at the first line which has
a smaller indentation than the first line of the help text.
-- misc options: "option" <symbol>[=<value>]
- Various less common options can be defined via this option syntax,
- which can modify the behaviour of the menu entry and its config
- symbol. These options are currently possible:
- - "defconfig_list"
- This declares a list of default entries which can be used when
- looking for the default configuration (which is used when the main
- .config doesn't exists yet.)
- - "modules"
- This declares the symbol to be used as the MODULES symbol, which
- enables the third modular state for all config symbols.
- At most one symbol may have the "modules" option set.
- - "allnoconfig_y"
- This declares the symbol as one that should have the value y when
- using "allnoconfig". Used for symbols that hide other symbols.
+- module attribute: "modules"
+ This declares the symbol to be used as the MODULES symbol, which
+ enables the third modular state for all config symbols.
+ At most one symbol may have the "modules" option set.
Menu dependencies
diff --git a/Documentation/kbuild/kconfig.rst b/Documentation/kbuild/kconfig.rst
index dce6801d66c9..5967c79c3baa 100644
--- a/Documentation/kbuild/kconfig.rst
+++ b/Documentation/kbuild/kconfig.rst
@@ -41,6 +41,14 @@ KCONFIG_CONFIG
This environment variable can be used to specify a default kernel config
file name to override the default name of ".config".
+This environment variable specifies a list of config files which can be used
+as a base configuration in case the .config does not exist yet. Entries in
+the list are separated with whitespaces to each other, and the first one
+that exists is used.
If you set KCONFIG_OVERWRITECONFIG in the environment, Kconfig will not